Robert Morris with Loopt founder and CEO Sam Altman (summer '05) that summer.

Sprint will soon offer Loopt’s social mapping service on its phones. Loopt's mobile application uses the GPS capabilities on phones to let users keep in touch with their friends. A user's private network of friends is displayed as dots (yes, they move) on a map on the phone.

Loopt had till now been available only through Boost, so even though Loopt has been very successful, the average Web 2.0 fan may not have known about them. I think that’s about to change.